V8SMYMATE Posted September 1, 2008 Share Posted September 1, 2008 Hi to all, i have just had a new full stainlees steel exhaust system put on d1 3.9 V8 (sounds awesome) but now the engine when on tick over wanders up and down by some 100 rpm. Do you think this is a result of the new exhaust? or by coincedence some else is causing it? Ta Duncan Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted September 1, 2008 Share Posted September 1, 2008 Could be the new exhaust has caused the lambda sensors to read differently and confused the ECU a bit, or someone's damaged a lambda sensor in the fitting. Hotwire can be fussy when it wants to be. Quote Link to comment Share on other sites More sharing options...
V8SMYMATE Posted September 1, 2008 Author Share Posted September 1, 2008 Could be the new exhaust has caused the lambda sensors to read differently and confused the ECU a bit, or someone's damaged a lambda sensor in the fitting. Hotwire can be fussy when it wants to be. anything i can check to see if it that? Quote Link to comment Share on other sites More sharing options...
First_Fleet Posted September 2, 2008 Share Posted September 2, 2008 someone's damaged a lambda sensor in the fitting. But they would have told him. Wouldn't they? Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted September 2, 2008 Share Posted September 2, 2008 anything i can check to see if it that? You should see the voltage at the lambda sensors swinging about, either between 0 and 1v (more like 0.2-0.8v usually) or for Titania sensors (which many Rovers are) up to 5v. There will be a ground wire, a heater (12v) wire and a signal wire, the signal wire is often co-axial shielded (blue colour) so fairly easy to spot. If it's not moving, rev the engine, it should jump up over 0.5v if it wasn't already. Quote Link to comment Share on other sites More sharing options...
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